Card clothing



Feb. 28', 1928. 1,660,492

J. PLATT ET.AL

CARD CLOTHING Filed May 1, 1923 I I N \IENTORSI JOHN PLATT.

W1 LLIAM' PITATT. Harm-v PLATT.

. ATTORNV Patented Feb. 28, 1 928.

UNITED STATES PATENT OFFICE.

JOHN PLATE, WILLIAM PLATT, AND HENRY PLATT, OF ROUBAIX, FRANCE.

- CARD cnornmc.

Application filed May 1, 1923, Serial No. 636,017, and in Belgium December 18, 1922. v

This invention relates to card clothing for carding engine drums, cylinders or rollers known as the swifts, Workers, strippers, doffers and the likethe main object of the inveni tion being to dispense with the well known card clothing which comprises a foundation of rubber fabric leather or similar material in which are secured or set a series of iron or steel staple teeth or points of bent or 10 knee-shaped formation, and to provide in lieu thereof a new form of card clothing which has'many advantages over the well known card clothing as will hereinafter be explained.

According to this invention we provide a metallic card clothing comprising closely set fine or needle shaped points or teeth. These teeth are formed .on a metal foundation or base andare disposed at an inclination there- 2 to but they are not bent orknee-shaped as are the teeth or points of the usual clothing referred to above. This metallic clothing maybe wound round the carding engine drums, cylinders or rollers, known as the 2 swifts, workers, strippers, dofi'ers and the like andit is-quite difierent and distinct from the Well known serrated, sawtoothed or Garnet wire which comprises comparatively large saw like teeth and which has been used for many years on rollers, drums and cylinders for opening waste, or preparing cleaning and burring textile fibres prior to the operation of carding proper; in other words prior to the material being delivered to the rollers known as the swifts, Workers, strippers and doifers of carding engines.

In order that the invention may be clearly understood and readily carried into effect the same will now be described more fully with -40 reference to Figs. 1 and 2 of the accompanying drawing which illustrates a side view and a cross sectional or end view of one form of the new metallic card clothing.

The metallic card clothing illustrated in Fig. 1 is a portion of a long strip which is adapted to be wound round the carding rollers referred to above and as shown it comprises a strip or wire-like base or foundation A of more or less rectangular section.- Integral with said strip or wire foundation A are teeth or points B closely set or disposed in the same plane and inclined at the same angle and in the same direction as shown. These teeth or points B are of needle shaped v formation, the height or length of each tooth being substantially greater than its maximum width. The teeth are narrower than the strip or foundation A whilst they are slightly tapered towards the oints or tips as shown in Fig. 2, so that it Wlll be understood that the teeth B are Very fine and slender.

The metallic card clothing is fundamentally different in construction from the usual serrated or sawtoothecl wire employed in opening and preparing operations and it is intended for an entirely diflerent purpose, viz, for covering the carding engine rollers which heretofore have been covered with the clothing comprising the flexible fabric or similar foundation in which are secured the bent metal teeth, staples or the like. The metallic card clothing shown in Fig. 1, may be wound around the carding rollers with the strip or base portion A in contact so that spaces are formed between the circumferential rows of needle shaped teeth B owing to the latter being narrower than the foundation strip A. The number of needle shaped teeth B and the thickness of the foundation strip A may vary according to the nature of the material to be carded, and the metallic card clothing may be such as to enable the swifts, doifers, strippers and other carding engine rollers to be covered or provided with a number of teeth or points per inch, circumferentially and longitudinally on the rollers equalto or greater than the number of points which are provided by the usual form of card clothing having the flexible fabric or other foundation with the bent wire or staple points, and it has been proved that better results are obtained with the metallic card clothing. Owing to the needle shaped teeth being straight as distinct from the bent or knee shaped form of the usual points or teeth, the material being carded is not retained by the needle teeth and-works out automatically thus avoiding frequent cleaning or fettling of the carding rollers. Further it is not necessary to grind or sharpen the needle teeth as is the case with the usual card clothing, for the reason that as the new metallic card clothing does not become stuffed, or clogged, the material is continuously carded at the bottom of the needle teeth and not at the points or tips which therefore are not subjected to excessive wear and tear and consequently do not require sharpening. As the new metallic card clothing does not require cleaning, fettling or grinding the output or production of the carding engine is much greater than that of carding englnes having the rollers covered with the usual clothing; in view of the advantages referred to above considerable economy in labour'results from the use of the new metallic card clothing. N0 waste is produced by the new metallic card clothing and it does not in any Way detrimentally afl'ect the fibre, but on the contrary enables a longer carded fibre to be obtained.

Having now fully described our said invention, What we claim and desire to secure by Letters Patent, is:

1. A metallic clothing for carding rollers comprising a continuous strip of metal in which are cut and arranged at an acute angle, a series of finely elongated points closely set relative to each other, the height of each point being substantially greater than its maximum width to provide a carding surface of finely tapered'points which avoid accumulating waste and require no fettlingor grinding.

2. A carding machine including a plain non-grooved drum and a continuous metallic strip spirally and directly Wound on such drum Without independent securing means, the said metallic strip being cut to provide fine elongated points closely set together at an acute angle to the strip, the height of each point'bcing substantially greater than its maximun'i width and such points together providing a carding surface of fine sharp points that avoid accumulation of waste-and require no fettling or grinding.

In testimony whereof We have hereunto set our hands.

- JOHN PLATT.

WILLIAM PLATT. HENRY PLATT. 

